List of Articles catalyst characterization

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  1 - Investigation of Products Distribution In Fischer-Tropsch Synthesis By Nano-sized Iron-based Catalyst
  Ali Mohajeri Yahya Zamani Laleh Shirazi
  10.22034/jna.2014.02.002
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• Open Access Article
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  2 - Study of the effect of digestion media on the properties of γ-alumina granules prepared via an oil-drop technique
  محمد عبدالهی حسین آتشی فرشاد فرشچی تبریزی
  HCl is always used as precursor in synthesis of γ-alumina granules via oil-drop. A comparative study was conducted to evaluate the effect of precursor on the catalytic characteristics and performance of γ-alumina prepared via the oil-drop technique. The synt More

  HCl is always used as precursor in synthesis of γ-alumina granules via oil-drop. A comparative study was conducted to evaluate the effect of precursor on the catalytic characteristics and performance of γ-alumina prepared via the oil-drop technique. The synthesized materials were characterized by X-ray diffraction (XRD), BET (Brunauer-Emmett-Teller), BJH (Barret-Joyner-Halenda), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), transmitting electron microscopy (TEM), and ammonia temperature programmed desorption (NH3-TPD( techniques. As a general trend, the γ-alumina catalyst prepared via oil-drop using HNO3 as the precursor has the higher surface area, pore volume, pore size, and distribution which are preferred in catalysis. Based on the results, the γ-alumina samples prepared using HNO3 are superior in activity about two times at 250 °C due to the differences in crystalline size, morphology, textural properties, and acid strength. Moreover, the incorporation of chlorine into γ-alumina structure is responsible for poisoning of catalysts which is evident by the less activity for the reaction Manuscript profile